Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2025 4 5.  Predictions up to the next  14.0 days:

     Date     Time(GOES-18)   GOES-18 Lat/Lon  NOAA-21 Lat/Lon    Distance(km)  Time Diff(sec)
 04/06/2025   22:40:24   (   0.00,-136.97) (  -0.47,-139.08)  239.62                80
 04/07/2025   22:24:18   (   0.00,-136.97) (   0.52,-134.53)  276.56                80
 04/09/2025   10:43:24   (  -0.00,-136.95) (   0.61,-139.81)  324.57                80
 04/10/2025   10:27:17   (  -0.00,-136.94) (  -0.38,-135.26)  191.53                80
 04/11/2025   22:46:32   (   0.00,-136.93) (  -0.79,-140.56)  413.49                80
 04/12/2025   22:30:25   (  -0.00,-136.92) (   0.21,-136.02)  102.33                80
 04/14/2025   10:49:31   (  -0.00,-136.90) (   0.97,-141.28)  499.73                80
 04/15/2025   10:33:24   (  -0.00,-136.88) (  -0.03,-136.74)   15.51                80
 04/17/2025   22:33:51   (   0.01,-136.83) (  -0.16,-137.49)   76.32                80
 04/18/2025   22:17:44   (   0.02,-136.81) (   0.85,-132.96)  438.24                80